Question on: JAMB Mathematics - 2006
If x = \(\begin{vmatrix} 1 & 0 & 1 \ 2 & -1 & 0 \ -1 & 0 & 1\end{vmatrix}\) and y = \(\begin{vmatrix} -1 & 1 & 2 \ 0 & -1 & -1 \ 2 & 0 & 1\end{vmatrix}\)
find 2x - y
find 2x - y
A
\(\begin{vmatrix} 3 & -1 & 0 \ 4 & -3 & -1 \ -4 & 1 & 1\end{vmatrix}\)
B
\(\begin{vmatrix} 3 & -1 & 0 \ 4 & -1 & 1 \ -4 & 1 & 1\end{vmatrix}\)
C
\(\begin{vmatrix} 3 & -1 & 0 \ 4 & -3 & 1 \ -4 & 1 & 1\end{vmatrix}\)
D
\(\begin{vmatrix} 3 & -1 & 0 \ 4 & 1 & 1 \ -4 & -1 & 1\end{vmatrix}\)
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Correct Option: B
2(10 - (-1) = 3 2(2) - (0) = 4 2(-1) - (2) = -4
2(0) - (1) = -1 2(-1) - (-1) = -1 2(0) - (-1) = 1
2(10 - (20) = 0 2(0) - (-1) = 1 2(1) - (1) = 1
\(\begin{vmatrix} 3 & -1 & 0 \ 4 & -1 & 1 \ -4 & 1 & 1\end{vmatrix}\)
2(0) - (1) = -1 2(-1) - (-1) = -1 2(0) - (-1) = 1
2(10 - (20) = 0 2(0) - (-1) = 1 2(1) - (1) = 1
\(\begin{vmatrix} 3 & -1 & 0 \ 4 & -1 & 1 \ -4 & 1 & 1\end{vmatrix}\)
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